# Sucrose Hydrolysis for Chem IA

Acid Catalysed Hydrolysis of Sucrose for Chem IA can have a Probable Research Question: What is the effect of temperature on the rate of acid-catalyzed hydrolysis of sucrose and how does it influence change in angle of rotation as measured by a polarimeter?

Sucrose, also known as table sugar, is a disaccharide that is widely used in the food industry. The hydrolysis process involves breaking down this sugar into its two monosaccharides – glucose and fructose – through the action of acid catalysts. Temperature plays an important role in this reaction rate; generally, higher temperatures result in more energy being available to overcome the activation energy barrier and accelerate the reaction. The angle of rotation observed when light passes through a solution can be used to gauge concentration levels and measure changes over time, allowing us to accurately determine reaction rates with a polarimeter.

Variables:

• Temperature (independent variable)
• Rate of acid-catalyzed hydrolysis of sucrose (dependent variable)
• Angle of rotation as measured by a polarimeter (dependent variable)

Materials Required:

• Sucrose solution
• Hydrochloric acid or sulfuric acid
• Polarimeter
• Hot plate or water bath
• Thermometer
• Test tubes
• Magnetic stirrer
• Stop watch

Method: Write your method or research the method. You need not to copy the following content.

1. Prepare a solution of 100 mL of sucrose and 5 mL of 1 M HCl. Mix them thoroughly.
2. Place the solution in a test tube and measure its initial angle of rotation using the polarimeter. Record the result.
3. Place the test tube on a hot plate. You should set the temperature to 25°C or any other temperature as you decide.
4. Attach a magnetic stirrer to the test tube.
5. Start the stopwatch and start stirring the solution.
6. Measure and record the angle of rotation every 2 minutes for a total of 10 minutes or what ever you have decided for the experiment.
7. Repeat steps 3-6 for temperatures of 30°C, 35°C, 40°C, and 45°C or as per your scheme of experiment.
8. Plot the data collected from each temperature on a graph. Remember to keep the angle of rotation on the y-axis and time on the x-axis. Do you know why?
9. Analyse your findings and proceed further.

Follow the IB DP Chemistry IA Templet.

Comment and share the post if you like the content and find Acid Catalysed Hydrolysis of Sucrose for Chem IA useful.